This classic textbook by John Addison Porter provides a comprehensive introduction to the principles of chemistry, covering the basic concepts of matter, energy, and chemical reactions. With its clear explanations and detailed examples, the book is an essential resource for students of chemistry at all levels. Whether you are a beginner or an advanced student of chemistry, Principles of Chemistry offers a wealth of information that will deepen your understanding of this fascinating subject. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.